—How soon can you finish the large picture?
—It’ll be ten days ____.
A. after I finish it B. before I’ll finish it
C. before it is finished D. since it has been finished
—How soon can you finish the large picture?
—It’ll be ten days ____.
A. after I finish it B. before I’ll finish it
C. before it is finished D. since it has been finished
C
before在这里可以翻译为“然后”，本句的意思是“还有10天才能做完。”B有较大干扰性，主句用将来时态，从句用一般现在时表达将来。